Effect of Activated Carbon Produced from Pine Cones in Reducing of Irrigation Water Salinity Parameters

Irrigation water salinity is one of important factors in soil salinization, decreasing of the soil permeability and yields. Hence, finding new low cost method in reducing of irrigation water salinity is inevitable. The aim of this study was producing activated carbon from pine cones and evaluation of its application in adsorption irrigation water salinity ions. Adsorption experiments were conducted in batch system and the effect of parameters affecting the adsorption including contact time, initial concentration of salinity ions, adsorption isotherm and kinetics, and the effect of adsorption on irrigation water quality parameters including EC, TDS, TH and SAR, were studied. The results showed that the maximum reduction of salinity in the electrical conductivity of 5.48, 10.41 and 20.4 (dS/m) were 7, 14.3 and 21.5 %, respectively. Adsorption Kinetic and isotherm of salinity ions followed the pseudo-second order reaction and Freundlich isotherm respectively. The maximum reduction in TH and SAR of irrigation water was observed in salimity of 20.4 dS/m that were decreased 14.4 and 14.8 percent, respectively.